TY  - RPRT
TI  - What do we mean by validating a prognostic model?
AU  - D G Altman
AU  - P Royston
PY  - 2000
DO  - 10.1002/(sici)1097-0258(20000229)19:4<453::aid-sim350>3.0.co;2-5
UR  - https://pubmed.ncbi.nlm.nih.gov/10694730/
ID  - 10694730
ER  -